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TM 55-2915-335-30&P
(1) Source Code. The source code tells you how to get an item needed for maintenance, repair, or over-
haul of an end item/equipment. Source codes are always the first two positions of the SMR code. Explanations of
source codes follow:
Code
Explanation
PA
PB
PC**
PD
PE
PF
PG
Stocked items; use the applicable NSN to request/requisition items with these source codes.
They are authorized to the category indicated by the code entered in the 3rd position of the
SMR code.
**NOTE: Items coded PC are subject to deterioration
KD
Items with these codes are not to be requested/requisitioned individually. They are part of a kit
KF
which is authorized to the maintenance category indicated in the 3rd position of the SMR
KB
code. The complete kit must be requisitioned and applied.
MO -
(Made at org/
AVUM Level)
MF -
(Made at DS/
AVUM Level)
MH - (Made at GS Level)
ML -
(Made at specialized
Repair Act (SRA)
MD -
(Made at Depot)
AO -
(Assembled by
org/AVUM Level)
AF -
(Assembled by
DS/AVIM Level)
AH -
(Assembled by GS
Category)
AL -
(Assembled by SRA)
AD -
(Assembled by Depot)
Items with these codes are not to be requested/requisitioned individually. They
must be made from bulk material which is identified by the part number in the
DESCRIPTION AND USABLE ON CODE (UOC) column and listed in the
Bulk Material group of the repair parts list in this RPSTL. If the item is
authorized to you by the 3rd position code of the SMR code, but the source
code indicates it is made at a higher level, order the item from the higher level
of maintenance.
Items with these codes are not to be requested/requisitioned individually. The
parts that make up the assembled item must be requisitioned or fabricated and
assembled at the level of maintenance indicated by the source code. If the 3rd
position code of the SMR code authorizes you to replace the item, but source
code indicates the item is assembled at a higher level, order the item from the
higher level of maintenance.
XA -
Do not requisition an “XA’’-coded item. Order its next higher assembly. (Also refer to the NOTE
below.)
XB -
If an “XB’’-coded item is not available from salvage, order it using FSCM and part number given.
XC -
Installation drawing, diagram, instruction sheet, field service drawing, that is identified by manufacturer’s
part number.
XD -
Item is not stocked. Order an “XD’’-coded item through normal supply channels using the FSCM and
part number given, if no NSN is available.
NOTE
Cannibalization or controlled exchange, when authorized, maybe used as a
source of supply for items with the above source codes, except for those
source coded “XA” or those aircraft support items restricted by requirements
of AR 700-42.
B-2
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